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Page 136 / 241 Scroll up to view Page 131 - 135
Vigor2130 Series User’s Guide
128
Destination Address
Display the destination address of the static route.
Status
Display the status of the static route.
Add
Click it to add a new static route.
Add Static Routes to Private and Public Networks
Here is an example of setting Static Route in Main Router so that user A and B locating in
different subnet can talk to each other via the router. Assuming the Internet access has been
configured and the router works properly:
z
use the Main Router to surf the Internet.
z
create a private subnet 192.168.10.0 using an internal Router A (192.168.1.2)
z
create a public subnet 211.100.88.0 via an internal Router B (192.168.1.3).
z
have set Main Router 192.168.1.1 as the default gateway for the Router A 192.168.1.2.
Before setting Static Route, user A cannot talk to user B for Router A can only forward
recognized packets to its default gateway Main Router.
1.
Click the
LAN - Static Route
and click
Add.
Check the
Enable
box. Please add a static
route as shown below, which regulates all packets destined to 192.168.10.0 will be
forwarded to 192.168.1.2. Click
OK
.
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2.
Return to
Static Route
page. Click
Add
again to add another static route as show below,
which regulates all packets destined to 211.100.88.0 will be forwarded to 192.168.1.3.
3.
Verify current routing table.
4.2.7 Bind IP to MAC
This function is used to bind the IP and MAC address in LAN to have a strengthening control
in network. When this function is enabled, all the assigned IP and MAC address binding
together cannot be changed. If you modified the binding IP or MAC address, it might cause
you not access into the Internet.
Click
LAN
and click
Bind IP to MAC
to open the setup page.
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Enable
Click this radio button to invoke this function.
However, IP/MAC
which is not listed in IP Bind List also can connect to Internet.
Disable
Click this radio button to disable this function. All the settings on
this page will be invalid.
Strict Bind
Click this radio button to block the connection of the IP/MAC
which is not listed in IP Bind List.
ARP Table
This table is the LAN ARP table of this router. The information for
IP and MAC will be displayed in this field. Each pair of IP and
MAC address listed in ARP table can be selected and added to IP
Bind List by clicking
Add
below
.
Add and Edit
IP Address
–
Type the IP address that will be used for the
specified MAC address.
Mac Address
–
Type the MAC address that is used to bind with
the assigned IP address.
Refresh
It is used to refresh the ARP table. When there is one new PC
added to the LAN, you can click this link to obtain the newly ARP
table information.
IP Bind List
It displays a list for the IP bind to MAC information.
Add
It allows you to add the one you choose from the ARP table or the
IP/MAC address typed in
Add and Edit
to the table of
IP Bind
List
.
Edit
It allows you to edit and modify the selected IP address and MAC
address that you create before.
Remove
You can remove any item listed in
IP Bind List
. Simply click and
select the one, and click
Remove
. The selected item will be
removed from the
IP Bind List
.
Note:
Before you select
Strict Bind
, you have to bind one set of IP/MAC address for one
PC. If not, no one of the PCs can access into Internet. And the web configurator of the router
might not be accessed.
4.3 NAT
Usually, the router serves as an NAT (Network Address Translation) router. NAT is a
mechanism that one or more private IP addresses can be mapped into a single public one.
Public IP address is usually assigned by your ISP, for which you may get charged. Private IP
addresses are recognized only among internal hosts.
When the outgoing packets destined to some public server on the Internet reach the NAT
router, the router will change its source address into the public IP address of the router, select
the available public port, and then forward it. At the same time, the router shall list an entry in
a table to memorize this address/port-mapping relationship. When the public server response,
the incoming traffic, of course, is destined to the router’s public IP address and the router will
do the inversion based on its table. Therefore, the internal host can communicate with external
host smoothly.
The benefit of the NAT includes:
z
Save cost on applying public IP address and apply efficient usage of IP address.
NAT allows the internal IP addresses of local hosts to be translated into one public IP
address, thus you can have only one IP address on behalf of the entire internal hosts.
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z
Enhance security of the internal network by obscuring the IP address.
There are
many attacks aiming victims based on the IP address. Since the attacker cannot be aware
of any private IP addresses, the NAT function can protect the internal network.
On NAT page, you will see the private IP address defined in RFC-1918. Usually we use the
192.168.1.0/24 subnet for the router. As stated before, the NAT facility can map one or
more IP addresses and/or service ports into different specified services. In other words, the
NAT function can be achieved by using port mapping methods.
Below shows the menu items for NAT.
4.3.1 Hardware NAT
Hardware-base Acceleration Engine, also named Protocol Processing Engine API is the
function that Draytek provides to extremely speed up the NAT performance.
While the hardware acceleration mechanism is activated, most of the bandwidth usage will
be concentrated on the specific sessions which increase transmission speed to get ultimately
accelerated.
With Hardware NAT, LAN to WAN NAT throughput can be over 900M bps. But be sure that
your PC has Giga Ethernet and connect with CAT6 Ethernet cable.
4.3.2 Open Ports
Open Ports
allows you to open a range of
ports for the traffic of special applications.
Common application of Open Ports includes P2P application (e.g., BT, KaZaA, Gnutella,
WinMX, eMule and others), Internet Camera etc. Ensure that you keep the application
involved up-to-date to avoid falling victim to any security exploits.
To add a new open port, click
Add new entry
.
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Name
Specify the name for the defined network service.
Protocol
Specify the transport layer protocol. It could be
TCP
,
UDP
and
TCP+UDP
.
Start Port
Specify the starting port number of the service offered by the
local host.
End Port (optional)
Specify the ending port number of the service offered by the
local host.
Local Host
Enter the private IP address of the local host.
Local Port (optional)
If it is configured, the forwarded traffic is mapped to this port
on the local host.

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